Ventilating device



Jan. 2, 1940. J, K 2,185,919

VENTILATING DEVICE Filed Jan. 15, 1938 ATTORNEY Patented Jan. 2, 1940 UNITED STATES PATENT OFFICE VENTILATING DEVICE Franz J. Kurth, New York, N. Y. Application January 15, 1938,- Serial No. 185,109

4 Claims.

to provide a plurality of air passageways therebetween, whereby air flowing through the device is divided into a plurality of separate streams of individually lesser velocities than the mean velocity of the total volume of air flowing either inwardly or outwardly through the device, to the end that any sensation of draft'either remote from or in the immediate vicinity of the device is avoided, regardless of whether the device is used for air supply or air exhaust purposes, or

both.

Generally speaking, the object of the present invention is to provide a unitary ventilating device of the type mentioned which is compact and which embodies both an air inlet or supply conduit, an air outlet or exhaust conduit, and two separate sets of mutually spaced hollow, flaring members, one set related to the inlet or supply conduit and the other set related to the outlet or exhaust conduit, for both supply and exhaust 'of air draftlessly through the device.

Another object of the invention is to provid a ventilating device of the type mentioned for both supply and exhaust of air, and which em- 39 bodies an arrangement of two separate sets of mutually spaced hollow, flaringmembers relative to each other such that there is practically no interference of the inflowing and outflowing currents of air with each other.

35 Another object of the invention is to provide a ventilating device of the type mentioned-for.

both supply and exhaust of air, and which embodies an electric lighting fixture so disposed that air exhausted through the device serves ef- 40 fectively to carry off heat from the lamp or lamps comprising part of the fixture.

With the foregoing and other objects in view, the invention consists in the novelcombination and arrangement of elements as will be herein- 45 after more fully described, illustrated in the accompanying drawing and defined in the appended claims.

In the accompanying drawing:

Figure 1 is a central, longitudinal section through one embodiment of the invention; and

Figure 2 is a similar view through another embodiment of the invention, while Fig. 3 is a view similar to Fig. 1 including the light fixture.

' First with particular reference to the embodi- 55 ment of the invention illustrated in Fig. 1, l0

(c1. air-40y designates an air supply cond t and II an air outlet or exhaust conduit. The latter is of .smaller diameter than the air supply conduit 10 and extends through the same being preferably concentric therewith.

To the outlet end of the air supply conduit III is connected the smaller end of an open-ended hollow flaring member I2, while to the inlet end of the air exhaust conduit II is connected the smaller end of an open-ended hollowlflaring 10 member l3.

Between the hollow flaring members I! and It, being spaced therefrom and from each'other are provided other open-ended hollow flaring members shown at l5 and It being so disposed 16 relative to the outlet end of the air supply conduit l0 and to the hollow flaring member I! that a plurality of separate gradually widening passageways a, b, c, is formed and air flowing from the conduit I0 is thereby divided into separate20 streams whereby the inflowing air is diffused and any sensation of draft is avoided.

Also in front of the hollow, flaring member I3 are disposed other hollow, flaring, open-ended members I! and 3 which cooperate with memher l3 and with each other, to provide a plurality-of separate flaring passageways d and e leading to the exhaust conduit H. Thus, flow of air to this conduit is likewise in the form of divided separate streams, and any sensation of draft due to exhaust of air through said conduit is thereby efiectively avoided.

As shown in Fig. 1, all the hollow flaring members are disposed entirely in advance of one another. In other words, said members, successively outward, have their inner ends disposed in planes outwardly of the planes of the outer ends of the members immediately therebehind.

The embodiment of the invention shown in Fig. 2 is in every way similar to that shown in 40 Fig. 1,'except that as shown in Fig. 2, there is provided intermediate the hollow flaring member l6 cooperating with the air inlet or supply conduit l0 and the hollow flaring member l3 cooperating with the air outlet or exhaust conduit II a flaring member I9-having a curved surface so that air passing through the passageway formed by the hollow flaring member I6 is laterally outwardly directed whereby any risk of this air being deflected towards the hollow flaring member 13' and being sucked into-the air outlet or exhaust conduit II' is eflectively prevented.

In the embodiment illustrated in Fig. 3, which is in every respect like that shown in Fig. 1, there is shown mounted in any suitable manner below the outermost hollow flaring member l8 an electric light fixture 20 including one or more lamps, one being shownat II. The heat generated by said lamp or lamps producing an upward flow of air will be carried ofi thereby through the air outlet or exhaust conduit I I.

Without further description, it is believed the novel features and advantages of this invention will be readily understood and appreciated. It is desired to point out, however, that while certain specific embodiments of the invention have been illustrated and described, the invention is readily capable of various other embodiments within its spirit and scope as defined in the appended claims.

I claim:

1. A ventilating device, comprising an air supply conduit, an air exhaust conduit extending through said air supply conduit in spaced relation thereto, open ended, mutually spaced, hollow flaring members disposed in advance of one another being directed with their smaller ends toward the delivery end of said air supply conduit, and openended, mutually spaced, hollow flaring members disposed in advance of one another being directed with their smaller ends toward the inlet end of said exhaust conduit.

2. A ventilating device, comprising an air supply conduit, an air exhaust conduit extending through said air supply conduit in spaced relation thereto, open-ended mutually spaced hollow flaring members disposed in advance of one another being directed with their smaller ends toward the delivery end of said air supply conduit, and open-ended, mutually spaced, hollow flaring members disposed in advance of one another being directed with their smaller ends toward the inlet end of said exhaust conduit, and a flaring member having a curved surface disposed intermediate the hollow flaring members cooperating with said air supply conduit and the hollow flaring members cooperating with said air exhaust conduit for laterally deflecting the incoming air away from said exhaust conduit.

3. A ventilating device, comprising an air supply conduit, an air exhaust conduit extendingthrough said air supply conduit in spaced relation thereto, a series of open ended, mutually spaced, hollow flaring members related to said air ended, mutually spaced, hollow flaring members related to said exhaust conduit, the members of said second series being disposed in advance of one another and in advance of said exhaust conduit and being directed with their smaller ends toward the inlet end of said exhaust conduit.

4. A ventilating device, comprising an air supply conduit, an air exhaust conduit extending through said air supply conduit in spaced relation thereto, a series of open-ended, mutually spaced hollow flaring members related to said air supply conduit, said members being disposed in advance of one another and in advance of said air supply conduit and being directed with their smaller ends toward the delivery end of said air supply conduit, and asecond series of open-ended, mutually spaced, hollow flaring members related to said exhaust conduit, the members of said second series being disposed in advance of one another and in advance of said air exhaust conduit and being directed with their smaller ends toward the inlet end of said exhaust conduit, and a flaring member disposed intermediate the two series of hollow flaring members and cooper ating with said air exhaust conduit to deflect air delivered through the smaller of the first mentioned series of flaring members laterally away from said second mentioned series of flaring members.

FRANZ J. KURTH. 

